Heating apparatus for incubators.



' No. ssa-,168. Patented Nov. 2a, |899.

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HEATING APPARATUS FOR INCUBATURS.

(Application led Jan. 6, 1899.)

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ALBERT W. BESSEY, OF ORANGE, CALIFORNIA.

HEATING APPARATUS FOR ENCUBATORS.

SPECIFICATION forming part of Letters Patent No. 638,168, dated November2S, 1.899.

Application filed January 6, 1399l Serial No. 701.340. (No model.)

To all whom t may concer/1,;r

Be it known that I, ALBERT W. BESSEY, a citizen of the United States,residing at Orange, in the county of Orange and State of California,have invented a new and useful Heating Apparatus for Incubators, ofwhich the following is'a specification.

The invention relates to improvements in heating apparatus forincubators.

The object of the present invention is to improve the construction ofheating apparatus for incubators and to provide simple and efficientmeans for controlling the draft and to enable the eggs to be subjectedmore thoroughly and uniformly to the action of the heat.

The invention consists in the construction and novel combination andarrangemement of parts, hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a longitudinal sectional view of anincubator provided with a heating apparatus constructed in accordancewith this invention. Fig. 2 is a transverse sectional view.

Like numerals of reference designate corre sponding parts in bothfigures of the drawings.

l designates a casing rectangular in crosssection and supported bysuitable legs 2 and provided near its ends with vertical partitions 3and at, forming an intermediate chamber or compartment for the receptionof trays 5. The partition 3, which extends from the bottom of the casingto within a short distance from the top, forms an end compartment G forthe reception of the heating apparatus, and it provides a space betweenits upper edge and the top of the casing for the passage of hot-waterpipes and hot air. The partition 4, which is located near the other endof the casing, forms a narrow air-passage 7, and openings or ducts 8 and9 are provided and are located, respectively, near the lower edge of thepartition t and the top of the casing, so that air passing through thespace 10 will descend through the tray and escape beneath the saine byway of the openings 8.

The heating apparatus consists of a cylindrical boiler 11, composed ofcylindrical inner and outer walls and having a contracted upper end 12,and the space inclosed by the inner wall or shell of the boiler isentirely open at the bottom and receives a cone 13. The cone 13, whichis adapted to receive the chimney 14 of a lamp 15 or other suitableheating device, such as a gas-jet, extends a short distance below theboiler and is connected with an outer casing 16, conforming to theconfiguration of the boiler or reservoir and to a smoke pipe or flue 18,extending upward from the contracted portion of the boiler. The upperportion of the outer cas' ing or jacket is contracted around the flue18, and its upper end, which is closed directly above the interveningspace 19, is provided with au annular series of openings 20. The lowerend of the jacket or casing is provided with a horizontal flange or ring21, which is united to the base of the cone 13.

The bottom of thejacketis mounted within an opening of the bottom of thecasing, and

`the upper portion of the jacket extends through the top of the same,the openings 20 being located above the casing. The iiue 18, whichextends above the jacket, is adapted to be opened and closed to regulatethe draft and the heating power of the apparatus, and this is effectedby means of a valve or cover 22, mounted on a lever 23, which isfulcrumed between its ends on a suitable support 24 and which may beheld in a position for opening the flue by any suitable means, the coveror valve being preferably maintained in its closed position by gravity.

When the valve is open, the heat passes upward from the cone 13 to theflue 18 and out at the top thereof, and this direct draft draws in thecool air through the openings 20, causing the same to pass downwardthrough the intervening space between the outer casing or jacket and theiiue and boiler and upward at the inner side of the boiler between thesame and the cone 13, which forms an inner jacket. By passing the coolair around the inner and outer sides of the boiler the heating power ofthe lamp is modified and a moderate temperature of the water within theboiler is produced; but when it is' desired to obtain the maximumheating effect of the device the valve 22is closed and the heat afterleaving the top of the cone or inner jacket impinges against the innerwall or shell of the boiler, passes around the bottom and then upployed.

The water i's supplied to the apparatus by means of a Iilling or supplytube 34, communicating with the return portion of the distributing orcirculating pipe 25 and provided at its upper end with a cup orenlargement to enable water to be poured into it readily.

The invention has the following advantages: The heating apparatus bycausing the heat to impinge against the inner and outer faces of thecylindrical boiler produces the greatest heating effect, and the water,by being distributed in a thin cylindrical sheet, is more thoroughlyoperated on and more quickly heated than if it were arranged in acompact body; also, by'controlling the passage of the heat through theapparatus a maximum heating effect may be produced or a moderate heatmay be obtained.

Changesin the form, proportion, and minor details of construction may beresorted to without departing from the spirit or sacricing any of theadvantages of this invention.

What is claimed isl. In an incubator, a heating apparatus comprising aboiler having inner and outer lshells adapted to hold the water in athin sheet, a flue extending from the top of the boiler andcommunicating with the space inclosed by the inner shell to form adirect passage for the heat, an outer jacket spaced from the boiler, aninner jacket connected with the lower end of the outer jacket andextending upward into the space inclosed by the inner shell andterminating short of the said iiue, and means for governing the flow ofthe products of combustion through the flue, substantially as described.

2. In an incubator, a heating apparatus comprising a boiler having innerand outer Walls and adapted to arrange the water in a thin sheet, a flueextending upward from the boiler, inner and outer jackets connected atthe bottom and providing intervening spaces between them and the innerand outer faces of the boiler, the inner jacket terminating short of thetop of the boiler and the outer jacket extending upward around the flue,and means for opening and closing the flue,where by hot air may becaused to impinge against the inner and outer faces of the boiler or topass directly through the flue, substantially as and for the purposedescribed;

3. In an incubator, a heating apparatus comprising a boiler having innerand outer shells or walls to distribute the water in a thin sheet, aline extending from the top of the boiler, an outer jacket spaced fromthe boiler and the flue and provided at its top with openings, an innerjacket connected with the lower end of the outer jacket, and a valve foropening and closing the iiue, substantially as described.

4E. In an incubator, a heating apparatus comprising a hollow cylindricalboiler having a reduced upper end, a flue extending from the contractedportion of the boiler, an outer jacket spaced from the boiler and theflue and having an opening at its upper end, an inner cone or jacketconnected with the lower end of the outer jacket and adapted to receivea heating device, and a valve for opening and closing the flue,substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

ALBERT W. BESSEY.

Witnesses:

THOMAS WALMSLEY, W. H. H. CLAYTON.

